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[/] [eco32/] [trunk/] [stdalone/] [memtest/] [main.c] - Blame information for rev 246

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Line No. Rev Author Line
1 213 hellwig 
/*
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 * main.c -- ECO32 memory test
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 */
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#include "types.h"
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#include "stdarg.h"
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#include "iolib.h"
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#define K               1024
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#define M               (K * K)
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#define MEM_ADDR        ((void *) (0xC0000000 + 0x10000 + 0x3000))
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#define MEM_SIZE        (32 * M - (0x10000 + 0x3000))
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#define PASSES          3
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/**************************************************************/
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unsigned int randomNumber;
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void setRandomNumber(unsigned int seed) {
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  randomNumber = seed;
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}
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unsigned int getRandomNumber(void) {
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  randomNumber = randomNumber * (unsigned) 1103515245 + (unsigned) 12345;
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  return randomNumber;
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}
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/**************************************************************/
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void writeWords(void *start,
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                unsigned int numWords,
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                unsigned int seed) {
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  unsigned int *addr;
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  unsigned int rn;
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  setRandomNumber(seed);
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  addr = (unsigned int *) start;
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  while (numWords -= 1) {
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    rn = getRandomNumber();
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    *addr++ = rn;
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  }
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}
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void writeHalfs(void *start,
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                unsigned int numHalfs,
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                unsigned int seed) {
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  unsigned short *addr;
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  unsigned int rn;
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  setRandomNumber(seed);
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  addr = (unsigned short *) start;
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  while (numHalfs -= 2) {
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    rn = getRandomNumber();
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    *addr++ = (rn >> 16) & 0x0000FFFF;
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    *addr++ = (rn >>  0) & 0x0000FFFF;
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  }
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}
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void writeBytes(void *start,
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                unsigned int numBytes,
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                unsigned int seed) {
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  unsigned char *addr;
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  unsigned int rn;
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  setRandomNumber(seed);
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  addr = (unsigned char *) start;
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  while (numBytes -= 4) {
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    rn = getRandomNumber();
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    *addr++ = (rn >> 24) & 0x000000FF;
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    *addr++ = (rn >> 16) & 0x000000FF;
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    *addr++ = (rn >>  8) & 0x000000FF;
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    *addr++ = (rn >>  0) & 0x000000FF;
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  }
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}
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unsigned int readWords(void *start,
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                       unsigned int numWords,
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                       unsigned int seed) {
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  unsigned int errors;
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  unsigned int *addr;
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  unsigned int rn;
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  errors = 0;
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  setRandomNumber(seed);
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  addr = (unsigned int *) start;
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  while (numWords -= 1) {
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    rn = getRandomNumber();
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    if (*addr++ != rn) {
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      errors++;
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    }
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  }
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  return errors;
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}
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unsigned int readHalfs(void *start,
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                       unsigned int numHalfs,
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                       unsigned int seed) {
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  unsigned int errors;
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  unsigned short *addr;
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  unsigned int rn;
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  errors = 0;
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  setRandomNumber(seed);
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  addr = (unsigned short *) start;
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  while (numHalfs -= 2) {
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    rn = getRandomNumber();
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    if (*addr++ != ((rn >> 16) & 0x0000FFFF)) {
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      errors++;
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    }
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    if (*addr++ != ((rn >>  0) & 0x0000FFFF)) {
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      errors++;
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    }
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  }
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  return errors;
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}
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unsigned int readBytes(void *start,
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                       unsigned int numBytes,
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                       unsigned int seed) {
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  unsigned int errors;
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  unsigned char *addr;
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  unsigned int rn;
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  errors = 0;
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  setRandomNumber(seed);
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  addr = (unsigned char *) start;
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  while (numBytes -= 4) {
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    rn = getRandomNumber();
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    if (*addr++ != ((rn >> 24) & 0x000000FF)) {
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      errors++;
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    }
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    if (*addr++ != ((rn >> 16) & 0x000000FF)) {
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      errors++;
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    }
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    if (*addr++ != ((rn >>  8) & 0x000000FF)) {
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      errors++;
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    }
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    if (*addr++ != ((rn >>  0) & 0x000000FF)) {
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      errors++;
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    }
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  }
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  return errors;
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}
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/**************************************************************/
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void memtest(void *start, unsigned int size, int passes) {
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  int i;
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  int j;
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  unsigned int seed;
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  setRandomNumber(10007);
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  for (i = 1; i <= passes; i++) {
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    printf("Pass %d\n", i);
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    /* -------------------- */
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    printf("  writing words...\n");
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    for (j = 0; j < i; j++) {
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      getRandomNumber();
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    }
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    seed = getRandomNumber();
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    writeWords(start, size / 4, seed);
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    printf("    reading words: ");
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    printf("%d", readWords(start, size / 4, seed));
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    printf(" errors\n");
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    printf("    reading halfs: ");
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    printf("%d", readHalfs(start, size / 2, seed));
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    printf(" errors\n");
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    printf("    reading bytes: ");
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    printf("%d", readBytes(start, size / 1, seed));
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    printf(" errors\n");
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    /* -------------------- */
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    printf("  writing halfs...\n");
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    for (j = 0; j < i; j++) {
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      getRandomNumber();
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    }
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    seed = getRandomNumber();
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    writeHalfs(start, size / 2, seed);
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    printf("    reading words: ");
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    printf("%d", readWords(start, size / 4, seed));
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    printf(" errors\n");
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    printf("    reading halfs: ");
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    printf("%d", readHalfs(start, size / 2, seed));
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    printf(" errors\n");
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    printf("    reading bytes: ");
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    printf("%d", readBytes(start, size / 1, seed));
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    printf(" errors\n");
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    /* -------------------- */
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    printf("  writing bytes...\n");
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    for (j = 0; j < i; j++) {
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      getRandomNumber();
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    }
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    seed = getRandomNumber();
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    writeBytes(start, size / 1, seed);
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    printf("    reading words: ");
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    printf("%d", readWords(start, size / 4, seed));
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    printf(" errors\n");
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    printf("    reading halfs: ");
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    printf("%d", readHalfs(start, size / 2, seed));
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    printf(" errors\n");
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    printf("    reading bytes: ");
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    printf("%d", readBytes(start, size / 1, seed));
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    printf(" errors\n");
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  }
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}
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/**************************************************************/
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int main(void) {
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  printf("\nECO32 memory test started\n\n");
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  memtest(MEM_ADDR, MEM_SIZE, PASSES);
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  printf("\nECO32 memory test finished\n");
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  return 0;
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}

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